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Homework Help: Maximum particle displacement in a sonic boom wave

  1. Jan 25, 2009 #1
    1. The problem statement, all variables and given/known data

    A typical sonic boom is a solitary N wave with a peak to peak pressure amplitude of 2 lbf/ft^2 and a wavelength of 50 ft. Find the maximum particle displacement.

    2. Relevant equations


    3. The attempt at a solution

    I've found some equations on the internet. For instance, I have the speed of the wave (u) (that I should then differentiate to get the particle displacement I think...):
    u = p * C0 * rho0
    u = c0 * S
    I can't manage anyhting with these equations and I can't find anything representing the sound wave of the problem on a graph. I can't visualize the problem at all.
    Could anyone give me some tips or explanations on this problem?

    Thank you
  2. jcsd
  3. Jan 26, 2009 #2
  4. Jan 26, 2009 #3
    Thank you for the formula, but this formula includes the Sound frequency and the sound pressure which are not in the problem statement. Is it something I should know or I could find on the internet?

    Thank you
    Last edited: Jan 26, 2009
  5. Jan 26, 2009 #4
    Do you know any formula which brings together the velocity of a wave, its wavelength and its frequency?

    As for pressure, doesn't the question include this information?
  6. Jan 26, 2009 #5
    Sorry about the sound pressure, I wrote that maybe a little too fast.

    As for the formula you are talking about is it:

    velcity = wavelength * frequency

  7. Jan 26, 2009 #6
    Yes, that's the one:approve:
  8. Jan 26, 2009 #7
    Alright I think everything is working out, I'll just have to check the units as I'm not very familiar with it.

    Thank you very much
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